Dräger Medical CPU PCB 68332 Setup guide

All rights reserved. Copyright reserved • R5664590_LP_CPU.fm 03.03.03 • Repair instructions • Version 1.0 • Released
Dräger Medical AG & Co. KGaA • EvitaXL 1
Repair instructions General
CPU PCB 68332 1 General
In case of repair, replace the complete printed circuit
board. Remove the lithium battery, the real-time clock,
the EEPROM, and, if applicable, the jumpers from the
faulty printed circuit board and install them on the new
CPU 68332 PCB.
Electrostatic discharge may damage electrostatic
sensitive devices. When handling electrostatic
sensitive devices, use a static-dissipative mat
and a static dissipative wrist strap.

All rights reserved. Copyright reserved • R5664590_LP_CPU.fm 03.03.03 • Repair instructions • Version 1.0 • Released
Dräger Medical AG & Co. KGaA • EvitaXL 2
Repair instructions Power supply
2 Power supply
X2 (power supply)
Pin Assignm
ent Pin Assignment
1c +12 V 8c AGND
2c +24 V 15c DGND
3c +15 V 16c +5 V
4c -15 V
X11
Pin Assignment
1 +5 V
3DGND
X13
Pin Assignment
1 +5 V ISO
3 GND ISO
VCC RAM
Pin Assignment
32 +5 V (minimum voltage for retention of data is
2V)
16 DGND

All rights reserved. Copyright reserved • R5664590_LP_CPU.fm 03.03.03 • Repair instructions • Version 1.0 • Released
Dräger Medical AG & Co. KGaA • EvitaXL 3
Repair instructions Service LEDs
Fig. 1 CPU PCB 68332
G2 Lithium battery
U1 DC/DC converter
D35 Real-time clock
D1 Microprocessor
D22 EEPROM
3 Service LEDs
The service LEDs indicate a reset.
LED Reset Meaning
1 Overvoltage +5 V is too high.
2 Undervoltage +5 V is too low.
3 CPU reset The microprocessor, which
is located on the CPU 68332
PCB, resets its own
peripherals.
4 Reset up The reset signal from the
Pneumatics Controller PCB
resets the CPU 68332 PCB.
5 Reset down The reset signal from the
CPU 68332 PCB resets the
microprocessor on the
Pneumatics Controller PCB
and the boards on the
motherboard.
6 Display reset The reset signal from the
CPU 68332 PCB resets the
microprocessor of the
control unit.

All rights reserved. Copyright reserved • R5664590_LP_CPU.fm 03.03.03 • Repair instructions • Version 1.0 • Released
Dräger Medical AG & Co. KGaA • EvitaXL 4
Repair instructions Replacing the CPU 68332 PCB
Fig. 2 Detail of the CPU 68332 PCB; service LEDs
7 Pneumatics
disabled This signal is set if the pneumatics is not
functioning properly. It will
remain set until the
pneumatics functions
properly again.
LED Reset Meaning 4 Replacing the CPU 68332 PCB
1 Switch off the device.
2 Unplug the power plug of the device from the socket-
outlet.
3 Create ESD conditions.
4 Remove the faulty CPU 68332 PCB from the devcie
and place it on the static-dissipative mat.
5 Remove the lithium battery (Fig. 3/G2) from the faulty
CPU 68332 PCB and insert it into the battery holder of
the new CPU 68332 PCB making sure the polarity is
correct.
6 Remove the module D22 (EEPROM) (Fig. 3/D22) from
the new CPU 68332 PCB.
Electrostatic discharge may damage electrostatic
sensitive devices. When handling electrostatic
sensitive devices, use a static-dissipative mat
and a static dissipative wrist strap.

All rights reserved. Copyright reserved • R5664590_LP_CPU.fm 03.03.03 • Repair instructions • Version 1.0 • Released
Dräger Medical AG & Co. KGaA • EvitaXL 5
Repair instructions Replacing the CPU 68332 PCB
7 Remove the module D22 (EEPROM) from the faulty
CPU 68332 PCB and plug it onto the new CPU 68332
PCB observing the IC identification, see Fig. 3.
The D22 module contains device data (such as
device identification, operating hours, enabled
options, and customer-specific settings). Each device
has its own device identification. Therefore, the
module must be transferred from the old CPU 68332
PCB to the new one. If this module is faulty, the
device can be operated with the new D22 module
which is available on each new CPU 68332 PCB.
However, in this case the device has only the basic
settings, optional features must be enabled, see
service diagnosis mode.
Important: The time must be set!
Fig. 3 CPU PCB 68332
8 Check the jumper configuration and change if
applicable.
A faulty CPU 68332 PCB is special waste. Dispose of
a faulty CPU 68332 PCB according to applicable
waste disposal regulations.

All rights reserved. Copyright reserved • R5664590_LP_CPU.fm 03.03.03 • Repair instructions • Version 1.0 • Released
Dräger Medical AG & Co. KGaA • EvitaXL 6
Repair instructions Replacing the CPU 68332 PCB
9 Dispose of the faulty printed circuit board according to
applicable waste disposal regulations.
10 Push the new CPU 68332 PCB into the device.
11 Secure the CPU 68332 PCB to the device using the
screws.
12 Install the respective CPU 68332 PCB software.
13 Plug the power plug of the device into the socket-
outlet.
14 Switch the device on.
15 Perform “electrical safety tests” and “function tests” as
described in the PMS procedure. For the USA and
Canada: test according to CAN/CSA-22.2 No. 601.1-
M90.